Fix more integer underflow cases in base::Time::FromExploded.

base/time/time_unittest.cc

Index: base/time/time_unittest.cc
diff --git a/base/time/time_unittest.cc b/base/time/time_unittest.cc
index a42d701f25a22d7c596888b5ad496b7851ba631b..2731a6272bbfc3297dafad3e794aed654024ba90 100644
--- a/base/time/time_unittest.cc
+++ b/base/time/time_unittest.cc
@@ -59,6 +59,11 @@ TEST(TimeTestOutOfBounds, FromExplodedOutOfBoundsTime) {
       {{9840633, 1, 0, 1, 1, 1, 0, 0}, true},
       // Underflow will fail as well.
       {{-9840633, 1, 0, 1, 1, 1, 0, 0}, true},
+      // Test integer overflow and underflow cases for the values themselves.
+      {{std::numeric_limits<int>::min(), 1, 0, 1, 1, 1, 0, 0}, true},
+      {{std::numeric_limits<int>::max(), 1, 0, 1, 1, 1, 0, 0}, true},
+      {{2016, std::numeric_limits<int>::min(), 0, 1, 1, 1, 0, 0}, false},
+      {{2016, std::numeric_limits<int>::max(), 0, 1, 1, 1, 0, 0}, false},
   };
 
   for (const auto& test : kDateTestData) {